FIRST IDENTIFICATION OF RECIPROCAL TRANSLOCATIONS IN POLISH PIGS

Two different reciprocal translocations, rcp (8;14) (p21;q25) and rcp (7;13) (q13;q46), were described for the first time in Poland in the P olish Landrace and Duroc pigs. Observation of synaptonemal complexes s howed the presence of a quadrivalent composed of translocational chrom osomes and their homologues. Individuals carrying translocations were characterized by normal external appearance and correct semen paramete rs. Analysis of fertility made on the basis of litter size demonstrate d that fertility decreased by 25% in the earner of translocation rcp ( 8;14) and by 52% in the carrier of translocation rcp (7;13).